Scan-Wiremap. Dual-use test mode. Wiremap operation can be performed in Scan mode. QC Test. Accurately measure which end of the network cable is not crimped. Digital signal scanning. Dedicated digital signal anti-interference. Multi-function testing cable mode. Test cable pass/short circuit/open circuit/cross. Port Flash. To locate network port by the flashing port light on a server/switch/hub/router port. Withstand Voltage. Interface Withstand Voltage 60V, support POE scanning without burning. NCV strong current detection. Quickly identify strong electricity in the work environment and provide safety guarantee. LED lighting. Help you to scan the cables clearly in the dark room. Super strong momentum. Built-in 1400mAh polymer lithium battery, Type-C Charge.